85987210 ÷ 780 
Our goal is to divide 85987210 by 780.

Moving on to step 1:
If we divide 8 by 780, we get 0 and a remainder of 8.
Write down 0 as next digit of the result. 
Result so far: 0.0
If we take 0 away from 8, we end up with 8.
Bring next digit (5) of the dividend behind the 8 and repeat the process: 85 / 780

Moving on to step 2:
The number 780 fits into 85 0 times, leaving a remainder of 85.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtracting 0 from 85 leaves us with 85.
Take the next digit (9) from the dividend and append it to 85, then repeat: 859 / 780

Let's proceed to step 3:
859 divided by 780 is 1 with a remainder of 79.
The next digit of our result is 1. 
Result so far: 1.0
If we subtract 780 from 859, we get 79.
Grab the next digit (8) from the dividend, add it to 79, then carry on: 798 / 780

Going ahead to step 4:
780 goes into 798 1 times with a remainder of 18.
Use 1 as the next digit of our solution. 
Result so far: 11.0
Subtracting 780 from 798 leaves us with 18.
Append the next digit (7) from the dividend to 18 and continue with: 187 / 780

Advancing to step 5:
When dividing 187 by 780, we get 0 with a remainder of 187.
The number 0 becomes the next digit in our result. 
Result so far: 110.0
Subtract 0 from 187 to get 187.
Bring next digit (2) of the dividend behind the 187 and repeat the process: 1872 / 780

On to step 6:
If we divide 1872 by 780, we get 2 and a remainder of 312.
The number 2 becomes the next digit in our result. 
Result so far: 1102.0
Subtracting 1560 from 1872 leaves us with 312.
Fetch the next digit (1) from the dividend, attach it to 312 and continue: 3121 / 780

On to step 7:
The number 780 fits into 3121 4 times, leaving a remainder of 1.
The number 4 becomes the next digit in our result. 
Result so far: 11024.0
Subtracting 3120 from 3121 leaves us with 1.
Fetch the next digit (0) from the dividend, attach it to 1 and continue: 10 / 780

On to step 8:
When dividing 10 by 780, we get 0 with a remainder of 10.
Use 0 as the next digit of our solution. 
Result so far: 110240.0
Deduct 0 from 10 and we're left with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Going ahead to step 9:
100 divided by 780 is 0 with a remainder of 100.
Write down 0 as next digit of the result. 
Result so far: 110240.0
If we subtract 0 from 100, we get 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

Going ahead to step 10:
If we divide 1000 by 780, we get 1 and a remainder of 220.
The number 1 becomes the next digit in our result. 
Result so far: 110240.01
If we subtract 780 from 1000, we get 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2200, and continue the process.

Let's proceed to step 11:
The number 780 fits into 2200 2 times, leaving a remainder of 640.
Record the quotient 2 as the next digit in the result. 
Result so far: 110240.012
The remainder is 640 after subtracting 1560 from 2200.
Since there are no more digits in the dividend, we add a zero to the remainder making it 6400, and continue the process.

On to step 12:
6400 divided by 780 is 8 with a remainder of 160.
The number 8 becomes the next digit in our result. 
Result so far: 110240.0128
Subtracting 6240 from 6400 leaves us with 160.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1600, and continue the process.

On to step 13:
When dividing 1600 by 780, we get 2 with a remainder of 40.
Write down 2 as next digit of the result. 
Result so far: 110240.01282
Subtracting 1560 from 1600 leaves us with 40.
Since there are no more digits in the dividend, we add a zero to the remainder making it 400, and continue the process.

On to step 14:
780 can be fit into 400 0 times, resulting in a remainder of 400.
Use 0 as the next digit of our solution. 
Result so far: 110240.01282
If we take 0 away from 400, we end up with 400.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4000, and continue the process.

On to step 15:
780 goes into 4000 5 times with a remainder of 100.
Put 5 as the next digit of the answer. 
Result so far: 110240.0128205
Subtract 3900 from 4000 to get 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

Moving on to step 16:
1000 divided by 780 is 1 with a remainder of 220.
Record the quotient 1 as the next digit in the result. 
Result so far: 110240.01282051
If we subtract 780 from 1000, we get 220.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2200, and continue the process.

The quotient of the division is 110240.01282051, and the remainder is 2.2e-07.